By Roger Wakefield, Licensed Master Plumber · Published October 21, 2026
Quick answer: How do you document leak detection jobs? Take a photo of the water meter before you touch anything and another when the job is done, and photograph the gauge, the marked spot and the repair in between. The U.S. Environmental Protection Agency (EPA) tells homeowners to read that same meter before and after 2 hours of no water use, so your photos rest on a test anyone can look up.
In this short video, Roger Wakefield gives plumbers his rule for every leak job: take a picture of the water meter before you touch anything, take another one when you are done, and let that one habit be your proof, your invoice and your defense.
Why should you document every leak detection job?
Because a leak job ends with a hole in a floor or a yard, a bill, and a homeowner who was not standing next to you the whole time. Photos turn what you saw into something the customer can see too.
Roger sums up what those meter photos do for a plumbing company. They are your proof, your invoice and your defense:
- Proof: the first photo shows what the meter was doing before you turned a single valve, so nobody can say the leak started when you showed up.
- Invoice: the photos show the customer what they are paying for, which is the finding, not just the hole you dug.
- Defense: if a customer ever questions the work, the dated photos show exactly what the meter said when you arrived and when you left.
Roger has another line that fits here: anybody can swap a part, but very few can tell you which part, why, and prove it. Documentation is how you prove it.
What does the water meter tell you on a leak job?
The water meter is the device, usually in a box near the street, that measures every gallon of water going into the property. If it keeps moving while every faucet, toilet and appliance is off, water is going somewhere it should not.
Many meters also have a leak indicator: a small triangle, star or dial on the meter face that spins when even a little water moves. As the leak detection process guide puts it, every job starts at the street meter. Close the house valve. If the indicator keeps turning, the leak is in the yard. If it stops, the leak is inside the building, most likely under the slab.
Most homeowners never look at their meter. The EPA’s WaterSense Fix a Leak Week page says nine percent of homes have leaks that waste 50 gallons or more every day, and the average household’s leaks can waste more than 9,300 gallons a year. As Roger says, most of those homeowners have no idea. Your photo is often the first time they see it with their own eyes.
How do you take the “meter photo in”?
Take it first, before you open a valve, run a fixture or set down a tool. That photo records the property exactly as you found it.
- Open the meter box lid and clear away dirt or water so the meter face is readable. Wipe the glass with a damp cloth if it is cloudy.
- Take one wide photo that shows the meter, the box and the house or curb behind it, so the photo proves which meter it is.
- Take a close-up that shows the register and the leak indicator. The register is the row of numbers that counts all the water that has ever gone through the meter.
- If the indicator is turning, record a short video of it moving, since a still photo cannot show motion.
- Write the reading and the time on the work order, then ask the homeowner what in the house might be using water right now.
Your phone saves the date and time with every photo, and that time stamp is what turns a picture into a record. LeakPro’s water leak test guide uses the same idea for the pressure gauge: photograph it, so you have proof of the exact pressure at the exact time.
What else belongs in the job file between the two photos?
Everything you measured and everything you found. If it changed your mind about where the leak was, photograph it or write it down.
- The pressure test: a photo of the gauge at the start and again after the wait. In the water leak test, city pressure typically reads 60 to 80 pounds per square inch (PSI), and the gauge sits for 15 minutes with the water shut off at the meter.
- Each valve you closed: what the meter did with the house valve shut, with the irrigation shut off, and with any pool autofill shut off.
- The toilet dye test: a few drops of food coloring go in the tank, and the EPA says color in the bowl after 10 minutes means a leak. Photograph the bowl. Here is the full toilet leak test.
- The marked spot: a close photo of your mark with a tape measure in the frame, and a wide photo that shows where it sits in the room or the yard.
- The repair: the opened slab or trench, the broken pipe, and the finished repair before anything gets covered back up.
Some leaks come and go. LeakPro’s guide to finding water leaks with your water meter points out that readings taken at regular intervals may be the only way to catch them, so write down every reading, not just the first and the last.
What does the “meter photo out” prove?
It proves the job is done. With every fixture off again, a still leak indicator shows the water is staying in the pipes where it belongs.
If the indicator is still turning after the repair, something else is leaking or running, and you found it before you left instead of the customer finding it on the next water bill. Note it, photograph it and tell the homeowner while you are standing there. That conversation goes a lot better in the driveway than on the phone later.
Why does documentation matter when water damage gets expensive?
Because water damage is where the big money is. The Insurance Information Institute (Triple-I) reports that the average homeowners insurance claim paid for water damage and freezing was $15,400 for 2019 through 2023.
As Roger says, the repair is usually small, and finding the leak is the hard part. When the stakes are that high, the homeowner, the insurance adjuster (the person who decides what the insurance company pays) and your own office all want the same thing: a clear record of what you found, where and when. Your meter photos, gauge photos and marked spot give them that record.
How does documentation help you charge for the finding?
It shows the customer the skill they are paying for. A homeowner who sees the meter spinning in the first photo and standing still in the last one understands the value without a sales pitch.
Roger’s rule on pricing is simple: if you can find what nobody else can find, stop charging like it is a service call, because the finding is the skill and the finding is the value. He also says three holes in the drywall and still no leak is not bad luck, it is guessing. Your photos show the customer you did not guess. For how to set the number, read how to price leak detection.
How do you make documentation a habit for every technician?
Make it part of the job, not an extra. A tech who takes the same photos in the same order on every call never forgets the one that matters.
- Put the photo list on every leak detection work order, with a box to check for each photo.
- Save every photo to a job folder named with the address and the date, the same day it was taken.
- Do not send the invoice until the meter photo in and the meter photo out are both in the folder.
- Walk new techs through the list on their first ride-along, then check their job folders until the habit sticks.
If you are just getting started, read how to add leak detection services to your company, and send your techs to the 2-day hands-on LeakPro leak detection training in Wylie, Texas, where they learn the method on live leaks.
Frequently asked questions about documenting leak detection jobs
These are the questions plumbers and plumbing company owners ask most about documenting a leak job.
When should you take the first water meter photo?
Before you touch anything. Roger’s rule is a picture of the water meter before any valve, fixture or tool comes into play, and another one when you are done.
How long should a water meter test run?
The EPA’s homeowner test checks the meter before and after a 2-hour period when no water is being used. If the meter moved at all, there is probably a leak. The pressure gauge test plumbers run sits for 15 minutes.
Can a homeowner check the water meter for a leak?
Yes. Turn off every faucet, read the water meter, wait 2 hours without using any water, and read it again. If the number moved, water is going somewhere, and it is time to call a plumber who does leak detection.
What should a leak detection job record include?
The meter photo in, the gauge readings, which valves you closed and what the meter did each time, the marked spot, the repair, and the meter photo out, each one with its date and time.
Ready to make every leak job provable?
Get the equipment and the training in one place. Shop LeakPro equipment, see the leak detection training, or call LeakPro at 1-888-853-2577 to talk it through.

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